کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8917316 | 1642756 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
N-rich covalent organic polymer in situ modified TiO2 for highly efficient photocatalytic hydrogen evolution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: N-rich covalent organic polymer in situ modified TiO2 for highly efficient photocatalytic hydrogen evolution N-rich covalent organic polymer in situ modified TiO2 for highly efficient photocatalytic hydrogen evolution](/preview/png/8917316.png)
چکیده انگلیسی
TiO2 has been everlastingly employed as popular photocatalyst for water splitting. However, the wide band gap (3.0-3.2â¯eV) and poor absorption to visible light of TiO2 result in a low utilization of solar energy and limit its large-scale application. To decrease its band gap and promote the utilization of full solar energy, we here modified TiO2 by in situ growth of N-rich covalent organic polymer (termed as COPHM). During the in situ growth of COPHM on the surface of TiO2, intimate contacts between TiO2 and COPHM were built and core-shell structures were finally formed. The derived TiO2@COPHM demonstrated a narrower band gap (2.53â¯eV) compared to raw TiO2 (3.13â¯eV) and improved absorption to visible light. The optimal TiO2@COPHM hybrid exhibited excellent hydrogen evolution performance of 162.7â¯Î¼molâ¯hâ1 under simulated sunlight which was more than 3â¯times higher than raw TiO2 (51.3â¯Î¼molâ¯hâ1). Particularly, visible light hydrogen evolution rate of TiO2@COPHM reached 0.65â¯Î¼molâ¯hâ1 while non-hydrogen generation was observed using raw TiO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science Bulletin - Volume 63, Issue 6, 30 March 2018, Pages 369-375
Journal: Science Bulletin - Volume 63, Issue 6, 30 March 2018, Pages 369-375
نویسندگان
Zhuohang Zhou, Peng Peng, Zhonghua Xiang,